boom

app/controllers/admin/digitals_controller.rb

@@ -0,0 +1,12 @@
+class Admin::DigitalsController < Admin::BaseController
+  
+  resource_controller
+  
+  index.before do
+    @product = Product.find_by_permalink(params[:product_id])
+  end
+  
+  create.wants.html { redirect_to admin_product_digitals_url(@product) }
+  destroy.wants.html { redirect_to admin_product_digitals_url(@product) }
+  
+end

app/controllers/digitals_controller.rb

@@ -0,0 +1,16 @@
+class DigitalsController < Spree::BaseController
+
+  ssl_required :show
+
+  def show
+    link = DigitalLink.find_by_secret(params[:secret])
+    if link.present? and link.digital.attachment.present?
+      attachment = link.digital.attachment
+      if link.authorize! and File.file?(attachment.path)
+        send_file attachment.path :filename => attachment.original_filename, :type => attachment.content_type and return
+      end
+    end
+    render :unauthorized
+  end
+  
+end

app/models/digital.rb

@@ -0,0 +1,10 @@
+class Digital < ActiveRecord::Base
+
+  belongs_to :variant
+  has_many :digital_links, :dependent => :destroy
+
+  has_attached_file :attachment, :path => ":rails_root/private/digitals/:id/:basename.:extension"
+
+  # TODO: Limit the attachment to one single file. Paperclip supports many by default :/
+    
+end

app/models/digital_link.rb

@@ -0,0 +1,27 @@
+class DigitalLink < ActiveRecord::Base
+  
+  belongs_to :digital
+  belongs_to :line_item
+
+  before_validation :set_defaults, :on => :create
+  
+  # Can this link stil be used? It is valid if it's less than 24 hours old and was not accessed more than 3 times
+  def authorizable?
+    self.created_at > 1.day.ago and self.access_counter < 3
+  end
+  
+  # This method should be called when a download is initiated.
+  # It returns +true+ or +false+ depending on whether the authorization is granted.
+  def authorize!
+    authorizable? && increment!(:access_counter) ? true : false
+  end
+  
+  private
+  
+  # Populating the secret automatically and zero'ing the access_counter (otherwise it might turn out to be NULL)
+  def set_defaults
+    self.secret = SecureRandom.hex(15)
+    self.access_counter = 0
+  end
+
+end

app/models/line_item_decorator.rb

@@ -0,0 +1,22 @@
+LineItem.class_eval do
+  
+  has_many :digital_links
+  
+  after_save :create_digital_links, :if => :digital?
+  
+  # Is this item digital?
+  def digital?
+    variant.digital?
+  end
+  
+  private
+  
+  # Create the download link for this item if it is digital.
+  def create_digital_links
+    digital_links.delete_all
+    self.quantity.times do
+      digital_links.create!(:digital => variant.digital)
+    end
+  end
+  
+end

app/models/order_decorator.rb

@@ -0,0 +1,20 @@
+Order.class_eval do
+  
+  # Are all products/variants of this Order to be downloaded by the customer?
+  def digital?
+    line_items.map { |item| return false unless item.digital? }
+    true
+  end
+  
+  # Determine which method to use for shipping of digital products.
+  def digital_shipping_method
+    rates = rate_hash
+    # If there is a shipping method has "Download" in its name then we take that one.
+    rates.each { |rate| return rate if rate[:name].downcase.include?('download') }
+    # Other than that, we take the first one that we find that doesn't cost anything.
+    rates.each { |rate| return rate if rate[:cost] == 0 }
+    # Well, at this point we have a problem. No shipping method is cost-free or called "download".
+    nil
+  end
+
+end

app/models/variant_decorator.rb

@@ -0,0 +1,20 @@
+Variant.class_eval do
+  
+  has_one :digital, :dependent => :destroy
+  after_save :destroy_digital, :if => :deleted?
+  
+  # Is this variant to be downloaded by the customer?
+  def digital?
+    digital.present?
+  end
+  
+  private
+  
+  # Spree never deleted Digitals, that's why ":dependent => :destroy" won't work on Digital.
+  # We need to delete the Digital manually here as soon as the Variant is nullified.
+  # Otherwise you'll have orphan Digitals (and their attached files!) associated with unused Variants. 
+  def destroy_digital
+    digital.destroy
+  end
+
+end

app/views/admin/digitals/_digital.html.erb

@@ -0,0 +1,5 @@
+<% if digital.attachment_file_name.present? %>
+  <%= digital.attachment_file_name %> (<%= number_to_human_size(digital.attachment_file_size) %>)
+<% else %>
+  <%=t 'broken_file' %>
+<% end %>

app/views/admin/digitals/_form.html.erb

@@ -0,0 +1,35 @@
+<div class="yui-g">
+  <div class="yui-u first">
+  <%= form_for(:digital, :url => { :controller => 'digitals', :action => 'create' }, :html => { :multipart => true }) do |f| %>
+    <fieldset>
+      <legend><%= Variant.human_name %> "<%= variant.options_text %>"</legend>
+      
+        <%= f.field_container :current_file do %>
+          <strong><%=t 'current_file' %>:</strong><br/>
+          <% if variant.digital? %>
+            <%= render variant.digital %><%=  %>
+          <% else %>
+            <%=t 'none' %>
+          <% end %>
+        <% end %>
+        
+      <p class="form-buttons">
+        <% if variant.digital? %>
+          <%= link_to t("delete_file"), admin_product_digital_url(:id => variant.digital.id), :confirm => t('delete_file_cofirmation', :filename => variant.digital.attachment_file_name), :method => :delete %>
+        <% else  %>
+
+          <%= f.field_container :file do %>
+            <%= f.label :file, t("new_file") %> <span class="required">*</span><br/>
+            <%= f.file_field :attachment %>
+          <% end %>
+          
+          <%= hidden_field_tag 'digital[variant_id]', variant.id %>
+
+          <%= button t("upload") %>
+        <% end %>
+      </p>
+      
+    </fieldset>
+  <% end %>
+  </div>
+</div><br/>

app/views/admin/digitals/index.html.erb

@@ -0,0 +1,20 @@
+<%= render :partial => 'admin/shared/product_sub_menu' %>
+<%= render :partial => 'admin/shared/product_tabs', :locals => {:current => "Digital Versions"} %>
+
+<% if @product.has_variants? %>
+
+  <% for variant in @product.variants do %>
+    <%= render 'form', :variant => variant %>
+  <% end %>
+
+<% else %>
+  This product has no variants.
+
+  <% if @product.master.digital? %>
+    A digital version of this product currently exists:
+    <%= render @product.master.digital %>
+  <% end %>
+
+  <%= render 'form', :variant => @product.master %>
+
+<% end %>

app/views/checkout/_delivery.html.erb

@@ -0,0 +1,5 @@
+<%#
+  This is basically a switch that will render the appropriate "delivery choice" partial.
+  When there are no physical items at all, there should be no different shipping methods to choose.
+%>
+<%= render @order.digital? && @order.digital_shipping_method.present? ? 'delivery_digital' : 'delivery_original' %>

app/views/checkout/_delivery_digital.html.erb

@@ -0,0 +1,12 @@
+<fieldset id='shipping_method'>
+  <legend><%= t("shipping_method") %></legend>
+  
+    <%= radio_button :order, :shipping_method_id, @order.digital_shipping_method[:id] %>
+    <%==t 'digital_shipping', :email => current_user.email %> (<%= number_to_currency @order.digital_shipping_method[:cost] %>)
+    
+  </div>
+</fieldset>
+
+<div class="form-buttons">
+  <input type="submit" class="continue button primary" value="<%=t("save_and_continue") %>"/>
+</div>

app/views/checkout/_delivery_original.html.erb

@@ -0,0 +1,32 @@
+<%#
+  NOTE: The code below is an exact duplication of `spree_core/views/checkout/_delivery.html.erb´
+        We overwrote the original so we retain access to it by cloning it here.
+        Feel free to update the code below according to the original if needed!
+%>
+
+<fieldset id='shipping_method'>
+  <legend><%= t("shipping_method") %></legend>
+  <div class="inner">
+    <div id="methods">
+      <p class="field radios">
+        <% @order.rate_hash.each do |shipping_method| %>
+          <% next if shipping_method[:id] == @order.digital_shipping_method[:id] %>
+          <label>
+            <%= radio_button(:order, :shipping_method_id, shipping_method[:id]) %>
+            <%= shipping_method[:name] %> <%= number_to_currency shipping_method[:cost] %>
+          </label><br />
+        <% end %>
+      </p>
+    </div>
+    <% if Spree::Config[:shipping_instructions] && @order.rate_hash.present? %>
+      <p id="minstrs">
+        <%= form.label :special_instructions, t("shipping_instructions") %><br />
+        <%= form.text_area :special_instructions, :cols => 40, :rows => 7 %>
+      </p>
+    <% end %>
+  </div>
+</fieldset>
+
+<div class="form-buttons">
+  <input type="submit" class="continue button primary" value="<%=t("save_and_continue") %>"/>
+</div>

app/views/order_mailer/confirm_email.text.erb

@@ -0,0 +1,36 @@
+Dear Customer,
+
+Please review and retain the following order information for your records.
+
+============================================================
+Order Summary
+============================================================
+<% for item in @order.line_items %>
+<%= item.variant.sku %> <%=item.variant.product.name%> <%= variant_options(item.variant) %> (<%=item.quantity%>) @ <%= number_to_currency item.price %> = <%= number_to_currency(item.price * item.quantity) %>
+<% end %>
+============================================================
+Subtotal: <%= number_to_currency @order.item_total %>
+<% @order.adjustments.each do |adjustment| %>
+<%= "#{adjustment.label}: #{number_to_currency adjustment.amount}"%>
+<% end %>
+Order Total: <%= number_to_currency @order.total %>
+
+============================================================
+Download links for digital products
+============================================================
+
+ATTENTION! Each link will only work a SINGLE TIME!
+           Also, they will only work WITHIN 24 HOURS!
+
+<% for item in @order.line_items %>
+<% if item.digital? %>
+<%= item.variant.name %>:
+<% for link in item.digital_links %>
+<%= digital_url :protocol => 'https', :host => "yourdomainxygoeshere.com", :secret => link.secret %>
+<% end %>
+
+<% end %>
+<% end %>
+============================================================
+
+Thank you for your business.